Use these options to specify how the date range returns results. "Exact" means that the start and end dates of descriptions returned must fall entirely within the date range entered. "Overlapping" means that any description whose start or end dates touch or overlap the target date range will be returned.

Comprises Gwilym Prys-Davies' political papers (1954-2008) including letters, articles, minutes and reports, as well as subject files (1912-2012) and letters between Harri Webb and John Legona and some papers relating to William Abraham (Mabo...